Just to let you know, if you get HKS hi power Ti you don't need Y-pipe since it's true dual.

 

And I believe your car has the revup motor. From what I remember the Nismo cams wont work (although I haven't researched this in a while).

If you want plenum mods.. best bang for your buck is Motordyne MREV2 and 1/2" spacer.

 

Thaks guys

 

so what did you end up going with?

 

The exhaust system is listed in the signature.

 

i wana konw what headers he went with.

 

I went with the HKS Titanium dual with UTR resonated test pipes and I love it !!! As far as headers go Im ordering Crawfords

 

HKS is 2.25in. U should have went with APS 2.5 TD with 2.5 aps test pipes and crawford headers. That with a tune should give good gains.

 

Also hks is not ti. It only has ti tips. But I am sure u knew that.

 

well i had INJEN 04style version with stillen headers-testpipes.My car is a 04.I lost some torque and low and less at mid but gain at high rpms(5000 to 6600).After a year and something a sell the Inj and went with the stock Y pipe the rest of it.The car seems to be faster i can say but heavier a lot.After some months i changed the stock Y pipe because o damaged due to my drop to an handmade 63mm(2,5) with inner dimater to 60mm and then to one 63mm(inner 60)using the stock back and middle boxes.The thing then went a lot faster.Now i am thinking just something like the rest of me thinking...to swap the single from 60inner to something bigger or remain 60 but with some Turbostyle Universal backboxes like the white Z done.Stillen are starting from 50inner to end to a 60(testpipes),injen had 50inner but they were dual.....SO WHAT??...a lighter single i think is the best for our heavy Zsss

 

Crawford headers by far are the best headers on the market right now.